CN114986343B - Rapid polishing system and method for rigid contact line - Google Patents
Rapid polishing system and method for rigid contact line Download PDFInfo
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- CN114986343B CN114986343B CN202210746203.XA CN202210746203A CN114986343B CN 114986343 B CN114986343 B CN 114986343B CN 202210746203 A CN202210746203 A CN 202210746203A CN 114986343 B CN114986343 B CN 114986343B
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- 238000005498 polishing Methods 0.000 title claims abstract description 132
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 12
- 238000005299 abrasion Methods 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000007517 polishing process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
- B24B21/025—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces for travelling elongated stock, e.g. wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
- B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a rapid polishing system and a rapid polishing method for a rigid contact line, which belong to the technical field of rail transit and solve the technical problems that the manual polishing efficiency of the contact line is poor, the safety is to be improved, and the dynamic adjustment of the contact force of the contact line cannot be realized in the traditional technology, and the rapid polishing system and the rapid polishing method comprise an automatic polishing module: the polishing device is used for polishing and polishing the contact wire; contact force protection mechanism: the automatic polishing module is used for keeping the pressure between the automatic polishing module and the contact line constant and protecting the contact line, and is fixedly arranged at the top of the contact force protection structure; lifting mechanism: the automatic polishing module is used for adjusting the height of the automatic polishing module, and is arranged at the top of the lifting mechanism, so that the polishing efficiency, quality and safety of the contact line are improved, and the technical effect of providing dynamic contact force adjustment for the contact line is realized.
Description
Technical Field
The invention relates to the technical field of rail transit contact line polishing, in particular to a rigid contact line rapid polishing system and method.
Background
Along with the continuous acceleration of the urban process in China, the contradiction between urban infrastructure, particularly urban traffic and urban development is gradually revealed, and urban rail traffic plays a positive role in overall planning, promoting and guiding planning construction and economic development along the whole city, improving urban public traffic conditions, optimizing urban traffic structures and the like. The rigid contact net has a series of advantages of stronger current carrying capacity, no broken line danger, high safety and reliability, fewer parts, convenient installation, simple maintenance, low maintenance cost, tunnel clearance reduction, civil investment saving and the like, and is widely applied to urban rail transit power supply systems in various large cities in recent years.
During actual operation, the pantograph vibrates very severely, especially in the elastomeric ballast section. The pantograph vibrates violently, but the rigid contact net is inelastic, and dynamic coupling does not exist between the pantograph and the contact net, so that the pressure change of the pantograph net is relatively large, the pantograph can generate impact force with relatively large variable quantity on the contact wire, hard points are formed on the surface of the contact wire, vibration of the pantograph when the pantograph passes through the contact net is further aggravated, and vicious circle is formed. Meanwhile, the strong change of bow net pressure enables the pantograph not to keep good contact with the contact line, when the bow net pressure becomes zero, off-line can occur, arc discharge and contact line burn are caused, pocking marks appear on the contact line surface, abnormal abrasion phenomena such as uneven abrasion and even side abrasion are caused, and the quality of the contact line surface is affected. Abnormal abrasion of the contact line can influence the normal matching relation of the pantograph net, reduce the flow taking quality of the pantograph, shorten the service life of the contact line and even have certain influence on the safety operation of urban rail transit. In the running process of the railway vehicle, the vehicle can swing up and down, particularly the accelerating section, the vehicle can swing in an accelerating way, and the distance between the vehicle and the contact line can be continuously changed; in addition, due to the error in the contact line construction process, the contact line guide height and the standard height have certain deviation, and the deviation value of the distance between the vehicle and the contact line is further increased.
Contact line polishing is the most effective bow gateway system disposal measure at present, polishing coverage should be maximized, complete full line polishing is concentrated in a short time, the contact net can be ensured to keep good technical state, and the bow net matching relationship is improved. Because of the lack of contact wire polishing machine equipment in the current market, the contact wires are polished by a manual or hand-held polishing machine method at present, so that the smooth surface of the contact wires is ensured, and abnormal abrasion is relieved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a rigid contact line rapid polishing system and a rigid contact line rapid polishing method, which solve the problems of lower manual polishing efficiency and poorer polishing effect in the traditional technology.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
a rigid contact wire rapid grinding system comprising:
automatic polishing module: the polishing device is used for polishing and polishing the contact wire;
contact force protection mechanism: the automatic polishing module is used for keeping the pressure between the automatic polishing module and the contact line constant and protecting the contact line, and is fixedly arranged at the top of the contact force guaranteeing structure;
lifting mechanism: the contact force guaranteeing mechanism is arranged at the top of the lifting mechanism and used for adjusting the height of the automatic polishing module.
By adopting the scheme, the automatic polishing module can automatically polish the contact wire, so that the problem of low efficiency caused by a manual polishing mode in the traditional technology is avoided, wherein the contact force guaranteeing mechanism can ensure constant pressure between the automatic polishing module and the contact wire, and the phenomenon of contact wire damage or poor polishing effect caused by overlarge or undersize contact force in the polishing process is avoided; the lifting mechanism is used for roughly adjusting the height of the device, so that the device can be matched with contact lines of various heights, and the height adjustment can be made according to the contact force in the polishing process.
The automatic polishing module comprises a support and an abrasive belt, a wheel set is rotatably arranged on the support, the wheel set is connected with a driving device, the abrasive belt is wound outside the wheel set, the wheel set is used for driving the abrasive belt to rotate, and the driving device is used for driving the wheel set.
By adopting the scheme, the automatic polishing module can carry out surface treatment on the contact wire, the phenomena of uneven wear, side polishing, hard spots and the like on the surface of the contact wire due to wear are solved, the contact wire is mainly polished and polished through the abrasive belt, the abrasive belt can rotate through the wheel set arranged on the support, the contact wire can be polished through the rough outer surface of the abrasive belt in the rotation process, the wheel set is driven by the driving device, and the abrasive belt can rotate along with the wheel set when the wheel set rotates.
The wheel set comprises a driving wheel and a plurality of driven wheels, the driving wheel is fixedly connected with an output shaft of the driving device, and the driving wheel and the driven wheels are in rolling connection with the abrasive belt.
By adopting the scheme, the driving wheel is fixedly connected with the output shaft of the driving device, and can transmit the torque of the output shaft to the abrasive belt so as to enable the abrasive belt to rotate; the driven wheel is used to tension the sanding belt so that the sanding belt of the closed configuration remains stable in operation during rotation.
The support is provided with a tensioning wheel assembly, one end of the tensioning wheel assembly is in rolling connection with the abrasive belt, the other end of the tensioning wheel assembly is hinged with the support, the side part of the tensioning wheel assembly is hinged with an elastic assembly, and one end of the elastic assembly, which is far away from the tensioning wheel assembly, is hinged with the support.
By adopting the scheme, the running stability of the grinding wheel can be further improved, the tension of the abrasive belt in the running process can be improved through the additionally arranged tensioning wheel assembly, and the elastic assembly can continuously provide adaptive thrust for the tensioning wheel assembly, so that the tensioning wheel assembly can keep the tensioning action on the abrasive belt when the abrasive belt moves.
The support is rotationally connected with an output shaft of the driving device, an electric pushing cylinder is hinged to the side portion of the support, and one end, away from the support, of the electric pushing cylinder is hinged to the support.
By adopting the scheme, the angle of the automatic polishing module can be adjusted by extending or retracting the electric pushing cylinder, in the scheme, the automatic polishing module is fixed at the position in the vertical direction through the output shaft, and the polishing and polishing of the contact wires at different angles can be realized by the scheme.
A pressure sensor is arranged between the support and the contact force protection mechanism, and the pressure sensor is used for detecting the pressure between the abrasive belt and the contact line.
By adopting the scheme, the pressure between the abrasive belt and the contact line can be detected by the pressure sensor, wherein the pressure between the abrasive belt and the contact line is determined by the distance between the device and the contact line, and when the device rises and approaches the contact line, the pressure becomes large; when the device descends and is far away from the contact line, the pressure becomes small, if the value detected by the pressure sensor is larger than the set maximum pressure value, the polishing operation is immediately stopped, the contact line polisher resets, and the contact line polisher is prevented from being damaged by the excessive contact pressure.
The lifting mechanism comprises a scissor type lifter, a plurality of guide rods are slidably arranged at the top of the scissor type lifter, an upper panel is fixedly arranged on the side part of each guide rod, and the guide rods are used for guiding the movement of the upper panel in the vertical direction;
the bottom fixedly connected with cylinder of top panel, the one end that the cylinder kept away from the top panel is fixedly connected with the top of scissors formula lift.
By adopting the scheme, the air cylinder can adaptively retract when being subjected to pressure so as to ensure that the pressure between the upper panel and a contact object is constant and avoid the change of the contact pressure caused by the change of the distance between the automatic polishing module and a contact line, wherein the guide rod is used for ensuring that the upper panel can move vertically to the upper surface of the scissor type lifter and avoid the upper panel from tilting when moving up and down; wherein the lifting structure is used for carrying out integral height adjustment on the device.
The top of the scissor lift is fixedly provided with a first displacement sensor, and the first displacement sensor is used for monitoring the height of the upper panel.
By adopting the scheme, the first displacement sensor can monitor the moving distance of the upper panel and judge whether the cylinder stroke is completely compressed or not, so as to ensure that the contact force ensuring mechanism always has the compressible passive compensation quantity.
The rapid polishing method for the rigid contact line is characterized by comprising the following steps of:
step A: collecting damage type data into a storage system, and forming a damage type database;
and (B) step (B): obtaining contact line state inspection data, identifying the inspection data, and confirming the damage type S;
step C: matching the damage type S with a damage type database, and obtaining an optimal polishing strategy W:
step D: and controlling the polishing system to carry out polishing operation and finishing maintenance of the contact line.
By adopting the scheme, the polishing efficiency and quality of the contact line can be improved, and the intellectualization of polishing strategy selection can be realized by automatically identifying the damage type of the current contact line and adopting the optimal polishing strategy.
The specific steps of the step D are as follows:
step D1: the method comprises the steps of controlling forward movement through an engineering vehicle, detecting the real-time travel S1 of a cylinder in real time, and monitoring whether the contact pressure is smaller than Fmax in real time;
step D2: if the contact pressure is greater than Fmax, the cylinder is subjected to emergency pressure relief, and the electric push rod drives the lifting mechanism to descend;
step D2: if the contact pressure is smaller than Fmax, monitoring whether the stroke of the cylinder is between 1/4 and 3/4 of the total stroke S of the cylinder at any time; if the real-time travel S1 of the air cylinder 604 is greater than 3/4 of the total travel S, the electric push rod 802 drives the lifting mechanism to descend, so that the real-time travel S1 of the air cylinder 604 is 1/3 to 2/3 of the total travel S;
step D3: if the real-time travel S1 of the air cylinder 604 is smaller than 1/4 of the total travel S, the electric push rod drives the lifting mechanism to ascend, so that the real-time travel S1 of the air cylinder is between 1/3 and 2/3 of the total travel S;
step D4: and after the adjustment is finished, polishing operation is continued until the maintenance of the contact line is finished.
By adopting the scheme, constructors can judge whether the current automatic polishing module and the contact line pressure are kept at reasonable values or not through the pressure obtained by detection, and by the method, the situation that the contact line is damaged due to overlarge polishing pressure or the polishing effect is poor due to overlarge polishing pressure can be effectively avoided.
In summary, the beneficial effects of the invention are as follows:
1. can avoid traditional technique through automatic module of polishing, manpower is polished and is wasted time and energy, and the not high technical problem of efficiency, can carry out real-time regulation and control to polishing pressure through contact force guarantee mechanism, avoid the too big or too little phenomenon that produces the contact line damage of contact force or polishing effect is not good, improve efficiency, effect and the security that the contact line polished.
2. Through the automatic polishing system, the damage type of the contact line can be automatically resolved, and polishing strategies corresponding to the damage type are matched.
3. The polishing process is monitored in real time through the displacement sensor, and the polishing angle and the pressure between the automatic polishing modules can be adjusted according to the polishing state.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic side view of an angular assembly of the present invention;
FIG. 3 is a schematic view of a side view structure of an automatic polishing module according to the present invention;
FIG. 4 is a schematic view of the structure of the automatic polishing module according to the present invention;
FIG. 5 is a schematic view of the dust collector assembly of the present invention;
FIG. 6 is a schematic view of a side view of the contact force retention mechanism of the present invention;
FIG. 7 is a construction flow chart of the present invention;
FIG. 8 is a schematic diagram of the damage type and policy matching of the present invention;
FIG. 9 is a schematic diagram of a side view structure of a lifting mechanism according to the present invention;
fig. 10 is a schematic structural view of the polishing system of the present invention.
Reference numerals: 1-an insulator; 2-bus bars; 3-contact line; 4-a dust removing mechanism; 5-an automatic polishing module 6-a contact force protection mechanism; 7-a pressure sensor; 8-a lifting mechanism; 501-driven wheel; 502-a bracket; 503-abrasive belt; 504-a tensioner assembly; 505-drive wheel; 506-supporting seat; 507-electric pushing cylinder; 508-an output shaft; 509-a belt; 510-an electric motor; 403-dust hood; 402-hose; 401-a dust remover; 601—a guide bar support; 602-a guide bar; 603-upper panel; 604-cylinder; 605-linear bearings; 606-a first displacement sensor; 801-scissor lift; 802-electric push rod; 803-second displacement sensor.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
Embodiment one:
a rigid contact wire rapid grinding system comprising:
automatic polishing module 5: the polishing device is used for polishing and polishing the contact wire;
contact force securing mechanism 6: the automatic polishing module 5 is fixedly arranged on the top of the contact force guaranteeing structure 6, and is used for keeping the pressure between the automatic polishing module 5 and the contact line constant and protecting the contact line;
lifting mechanism 8: for adjusting the height of the automatic sanding module 5, the contact force assurance mechanism 6 is provided on top of the lifting mechanism 8.
In the above scheme, wherein the automatic polishing module 5 polishes the contact wire, wherein the contact force ensuring mechanism 6 is used for keeping the pressure between the automatic polishing module 5 and the contact wire constant, the lifting mechanism 8 is used for carrying out the height coarse adjustment on the device, the connection relation is that the automatic polishing module 5 is fixedly arranged at the top of the contact force ensuring mechanism 6, and the contact force ensuring mechanism 6 is fixedly arranged at the top of the lifting mechanism 8. The specific structure is shown in fig. 1-2.
The automatic polishing module 5 comprises a bracket 502 and an abrasive belt 503, wherein a wheel set is rotatably arranged on the bracket 502, the wheel set is connected with a driving device, the abrasive belt 503 is wound outside the wheel set, the wheel set is used for driving the abrasive belt 503 to rotate, and the driving device is used for driving the wheel set.
In the above scheme, the wheel set is connected with a driving device, in this embodiment, the driving device is a motor 510, the overall structure is shown in fig. 4, wherein the driving shaft of the motor 510 is connected with an output shaft 508, and the driving shaft of the motor 510 is connected with the output shaft 508 through a belt 509. Wherein the output shaft 508 is rotatably disposed on top of the support 506.
Wherein automatic module 5 of polishing contacts with contact line 3, and contact line 3 sets up in busbar 2 bottom, and the top of busbar 2 sets up insulator 1, sets up dust removal mechanism 4 in one side of automatic module 5 of polishing, and wherein dust removal mechanism 4 is used for collecting the grinding that automatic module 5 produced.
The driving shaft of the motor 510 is connected with the wheel set, and torque is transmitted to the abrasive belt 503 through the wheel set, and the closed structure formed by the abrasive belt 503 rotates and polishes the contact wire 3 under the driving of the motor 510. In this embodiment, the driving shaft of the motor 510 outputs torque to the wheel set through the output shaft 508, and the specific structure thereof is shown in fig. 4.
The abrasive belt 503 sequentially bypasses the outer walls of the rolling wheels in the wheel set, and the abrasive belt 503 is connected end to form the above-mentioned closed structure, and the specific transmission relationship is the same as that of the conveyor belt and the rollers, which will not be described in detail here. The support is used for fixing each rolling wheel in the wheel set, so that the position of the rolling wheel is fixed, and the rolling wheel can do autorotation motion around the axis of the rolling wheel.
The wheel set comprises a driving wheel 505 and a plurality of driven wheels 501, wherein the driving wheel 505 is fixedly connected with an output shaft of the driving device, and the driving wheel 505 and the plurality of driven wheels 501 are in rolling connection with the abrasive belt 503. The driving wheel 505 is used for transmitting the torque of the motor 510, and because the driving wheel 505 is in rolling connection with the abrasive belt 503, when the driving wheel 505 rotates, ideally, no motion overcoming the friction force is generated between the inner face of the abrasive belt 503 and the outer wall of the driving wheel 505, the abrasive belt 503 rotates along with the driving wheel 505, and the abrasive belt 503 can achieve the effects of polishing and polishing on the rough outer face of the abrasive belt 503 in the process of rotating the abrasive belt 503. The specific structure is shown in fig. 3-4.
The support 502 is provided with a tensioning wheel assembly 504, one end of the tensioning wheel assembly 504 is in rolling connection with the abrasive belt 503, the other end of the tensioning wheel assembly 504 is hinged with the support 502, the side part of the tensioning wheel assembly 504 is hinged with an elastic assembly, and one end of the elastic assembly, which is far away from the tensioning wheel assembly 504, is hinged with the support 502.
In the above-mentioned scheme, wherein one end of take-up pulley subassembly 504 articulates on support 502, and the other end is the gyro wheel structure, and this gyro wheel structure is connected with abrasive band 503 roll, and its concrete is, the contact point of the closed structure that gyro wheel structure and abrasive band 503 formed is located above-mentioned driven wheel 501 and the circumscribed line of drive wheel 505, through this kind of scheme, when take-up pulley subassembly 504 produces the displacement in the horizontal direction, and above-mentioned circumscribed line has the trend that length increases promptly, can realize further tightening of abrasive band 503 under this kind of trend, increases abrasive band 503's rotation stability. The closed structure formed by the abrasive belt 503 is a concept which is made for the sake of understanding in this embodiment, that is, the geometric shape formed by the abrasive belt 503 under the tensioning action of the driving wheel 505 and the two driven wheels 501. The tension pulley assembly 504 generates displacement in the horizontal direction, that is, when the tension pulley assembly 504 rotates around the hinge point with the bracket 502, the rotation direction of the tension pulley assembly can be decomposed into a displacement in the vertical direction and a displacement in the horizontal direction, wherein the displacement in the vertical direction and the displacement in the horizontal direction can be enclosed into a rectangle, the rotation direction at the moment is the diagonal direction of the rectangle, and the tension pulley assembly 504 is the displacement in the horizontal direction when the tension pulley assembly 503 is tensioned.
One end of the side portion of the tensioning wheel assembly 504, which is connected with an elastic assembly, is connected to the middle portion of the tensioning wheel assembly 504, and the other end of the side portion is hinged to the bracket 502, wherein the elastic assembly can provide thrust for the tensioning wheel assembly 504, so that the tensioning wheel assembly compresses the abrasive belt 503 in real time, and the specific structure of the side portion is shown in fig. 3. In this embodiment, the elastic component is preferably a spring.
The bracket 502 is rotatably connected with an output shaft of the driving device, an electric push cylinder 507 is hinged to the side part of the bracket 502, and one end of the electric push cylinder 507 far away from the bracket 502 is hinged to the support 506. With this construction, angular adjustment of the automatic sanding module 5 is achieved during the outward pushing out and inward retraction of the electric push cylinder 507, in which case the electric push cylinder 507 and the drive shaft of the drive device form a support for the stand 502. Under the condition of installing the dust hood 403, a light hole can be formed in the dust hood 403, the electric push cylinder 507 is connected with the bracket 502 through the light hole, and a cross rod is fixedly arranged at the end part of the telescopic rod and is perpendicular to the telescopic rod, wherein one end of the cross rod is hinged with the telescopic rod, and the other end of the cross rod is fixedly connected with the bracket 502.
In the present embodiment, the dust hood 403 is connected to the dust catcher 401 through the hose 402, and grinding dropped into the dust hood 403 can be intensively recovered in the dust catcher 401.
A pressure sensor 7 is arranged between the support 506 and the contact force securing means 6, the pressure sensor 7 being arranged to detect the pressure between the sanding belt 503 and the contact line.
Wherein pressure sensor 7 bears the weight of automatic module 5 of polishing, when the abrasive band 503 on the automatic module 5 of polishing compresses tightly to the contact line direction, pressure sensor 7's detection data increase, when the pressure between abrasive band 503 and the contact line reduces, then pressure sensor 7's detection data reduce, if the numerical value that pressure sensor 7 detected in the operation of polishing is greater than the maximum pressure value of settlement, then stop the operation of polishing immediately, cylinder 604 in the contact force assurance mechanism 6 is decompressed, elevating system 8 resets, prevent that too big contact pressure from damaging the contact net.
The lifting mechanism 8 comprises a scissor lift 801, a plurality of guide rods 602 are slidably arranged at the top of the scissor lift 801, an upper panel 603 is fixedly arranged at the side part of the guide rods 602, and the guide rods 602 are used for guiding the movement of the upper panel 603 in the vertical direction;
the bottom of the upper panel 603 is fixedly connected with an air cylinder 604, and one end of the air cylinder 604 away from the upper panel 603 is fixedly connected with the top of the scissor lift 801.
In this embodiment, a plurality of guide rods 602 are slidably disposed at the top of the scissor lift 801, the side portion of the guide rods 602 is fixedly provided with the upper panel 603, specifically, a top plate of the scissor lift 801 is provided with a plurality of light holes matched with the guide rods 602, the guide rods 602 can be inserted into the top plate of the scissor lift 801 through the light holes, and after connection, the upper panel 603 can move up and down along the direction of the guide rods 602;
the guide bar 602 prevents the upper panel 603 from moving in the horizontal direction during sliding. Wherein the guide bar 602 is fixedly arranged on the guide bar support 601, wherein the guide bar support 601 may increase the stability of the guide bar 602 on the upper panel 603, in this embodiment the guide bar support 601 is arranged on the upper panel 603.
Further, a linear bearing 605 is provided at the top of the scissor lift 801, and a guide bar 602 is slidably provided at the middle of the linear bearing 605.
The air cylinder 604 is a component for realizing constant pressure in the device, the bottom of the air cylinder 604 is fixedly connected with the scissor lift 801, a telescopic rod in the air cylinder 604 is fixedly connected with the upper panel 603, and in the embodiment, the air cylinder 604 stretches and contracts in the vertical direction.
The top of the upper panel 603 is fixedly provided with an automatic polishing module 5, and when the pressure between the automatic polishing module 5 and the contact line 3 changes, particularly the pressure becomes large, the air cylinder 604 can retract the telescopic rod under the action of the pressure; when the pressure is reduced, the telescopic rod extends outwards under the action of air pressure; when the pressure is stable and does not change, the cylinder is kept still. By the mode, the effect of keeping constant the pressure of the contact wire can be achieved. Wherein the upper panel 603, the guide bar 602 and the air cylinder 604 together constitute a contact pressure ensuring mechanism.
In a preferred scheme, the scissor lift is driven by an electric push rod 802, wherein sliding rails are arranged at the top and the bottom of the electric push rod scissor lift 801, a scissor push rod is arranged in the middle of the scissor lift 801, two ends of the scissor push rod are respectively connected with the sliding rails in a sliding manner, and the scissor lift can be lifted by pushing the scissor push rod by the electric push rod 802; further, a second displacement sensor 803 is provided at the bottom of the scissor lift 801, and the second displacement sensor 803 is configured to detect the lift amount of the scissor lift 801.
A first displacement sensor 606 is fixedly arranged on the top of the scissor lift 801, and the first displacement sensor 606 is used for monitoring the height of the upper panel 603.
With the above-mentioned scheme, the first displacement sensor 606 can monitor the height of the upper panel 603, and determine whether the expansion and contraction amount of the cylinder 604 is within the normal range according to the height change.
Embodiment two:
the rapid polishing method for the rigid contact line is characterized by comprising the following steps of:
step A: collecting damage type data into a storage system, and forming a damage type database;
and (B) step (B): obtaining contact line state inspection data, identifying the inspection data, and confirming a damage code number S;
step C: matching the damage type S with a damage type database, and obtaining an optimal polishing strategy W:
step D: and controlling the polishing system to carry out polishing operation and finishing maintenance of the contact line.
In the above embodiment, the method includes a data source module, an analysis module, a decision module and an execution module, the specific system structure of which is shown in fig. 10, wherein the analysis module is used for identifying inspection data, confirming damage parameters and obtaining damage codes S, wherein the damage types S and parameters include abnormal abrasion values, wave abrasion, hard spots, scratches, burns and bias angle information, and the corresponding damage codes S are obtained by matching, and the matching table of the damage codes S and the damage parameters and types is shown in fig. 8. The flow chart is shown in fig. 7. The polishing strategy is W01-S06, and specifically, different damage conditions are handled through different polishing pressures and engineering truck speeds, wherein each damage condition is marked through a damage code number S01-S06 and corresponds to the polishing strategy W01-W06 one by one, if the abnormal abrasion values of the wave mill and the burn are all 0.02mm, the damage code number is judged to be S02, and a strategy with the strategy code number of W02 is called, and the W02 strategy is that the angle polishing is alpha, the polishing pressure is (30 x K) N and the engineering truck speed is 5km/h. Wherein K is a damage coefficient, and alpha can be preset and adjusted according to practical requirements;
if the abnormal abrasion values of the hard spots and the scratches are 0.02mm, or the abnormal abrasion values of the corrugation and the burn are 0.03mm, judging the damage code as S03, and calling a W03 strategy, wherein the W03 strategy is that the polishing angle is alpha, the polishing pressure is (60 x K) N, and the speed of the engineering truck is 3km/h.
The specific steps of the step D are as follows:
step D1: the engineering vehicle is used for controlling the forward movement, detecting the real-time travel S1 of the air cylinder 604 in real time, and monitoring whether the contact pressure is smaller than Fmax in real time;
step D2: if the contact pressure is greater than Fmax, the cylinder 604 is depressurized in an emergency, and the electric push rod 802 drives the lifting mechanism 8 to descend;
step D2: if the contact pressure is less than Fmax, then monitoring at the moment whether the stroke of the cylinder 604 is between 1/4 and 3/4 of the total stroke S of the cylinder 604; if the real-time travel S1 of the air cylinder 604 is greater than 3/4 of the total travel S, the electric push rod 802 drives the lifting mechanism 8 to descend, so that the real-time travel S1 of the air cylinder 604 is 1/3 to 2/3 of the total travel S;
step D3: if the real-time travel S1 of the air cylinder 604 is less than 1/4 of the total travel S, the electric push rod 802 drives the lifting mechanism 8 to ascend, so that the real-time travel S1 of the air cylinder 604 is between 1/3 and 2/3 of the total travel S;
step D4: and after the adjustment is finished, polishing operation is continued until the maintenance of the contact line is finished.
In the above embodiment, the detected contact pressure is T1, and it is first determined whether T1 is within the allowable polishing pressure error, where the allowable upper polishing pressure limit is F1, the allowable lower polishing pressure limit is F2, and the value of the maximum required polishing pressure Fmax is greater than F1. The method comprises the following steps:
controlling the engineering truck to control forward, and detecting the contact pressure T1 between the automatic polishing module and the contact line in real time;
if the detected contact pressure T1 is greater than the polishing pressure error upper limit F1, controlling the lifting mechanism 8 to descend; if the detected contact pressure T1 is smaller than the lower polishing pressure error limit F2, controlling the lifting mechanism 8 to lift; if the detected contact pressure T1 exceeds the maximum allowable polishing pressure Fmax, the polishing operation is stopped in an emergency mode, and the lifting mechanism 8 is controlled to descend; after finishing the polishing operation, the automatic polishing module is closed, and the lifting mechanism descends to an initial position.
After finishing polishing, the cylinder 604 is depressurized, the lifting mechanism 8 is lowered to an initial position, the polishing abrasive belt 503 is closed, the polishing angle is restored to an initial state, and the engineering truck is stopped.
Claims (8)
1. A rigid contact wire rapid grinding system, comprising:
automatic polishing module (5), including abrasive band (503): the automatic polishing module (5) is used for polishing and polishing the contact wire, and the automatic polishing module is controlled to move forwards by an engineering truck;
the contact force guaranteeing mechanism (6) comprises a guide rod (602) and an upper panel (603): the automatic polishing module (5) is fixedly arranged at the top of the contact force guaranteeing structure (6);
lifting mechanism (8): the contact force guaranteeing mechanism (6) is arranged at the top of the lifting mechanism (8) and used for adjusting the height of the automatic polishing module (5); the top of the lifting mechanism (8) is provided with a plurality of guide rods (602) in a sliding manner, the side parts of the guide rods (602) are fixedly provided with upper panels (603), and the bottoms of the upper panels (603) are fixedly connected with air cylinders (604);
the polishing method of the rigid contact line rapid polishing system comprises the following steps:
step A: collecting damage type data into a storage system, and forming a damage type database;
and (B) step (B): obtaining contact line state inspection data, identifying the inspection data, and confirming the damage type S;
step C: matching the damage type S with a damage type database, and obtaining an optimal polishing strategy W;
step D: controlling a polishing system to carry out polishing operation and finishing maintenance of the contact line;
the specific steps of the step D are as follows:
step D1: the method comprises the steps of controlling forward movement through an engineering truck, detecting a real-time stroke S1 of a cylinder (604) in real time, and monitoring whether contact pressure is smaller than Fmax in real time;
step D2: if the contact pressure is greater than the maximum allowable polishing pressure Fmax, the air cylinder (604) is used for emergency pressure relief, and the electric push rod (802) drives the lifting mechanism (8) to descend;
if the contact pressure is less than the maximum allowable polishing pressure Fmax, monitoring whether the stroke of the cylinder (604) is between 1/4 and 3/4 of the total stroke S of the cylinder (604) at all times; if the real-time travel S1 of the air cylinder (604) is greater than 3/4 of the total travel S, the electric push rod (802) drives the lifting mechanism (8) to descend, so that the real-time travel S1 of the air cylinder (604) is between 1/3 and 2/3 of the total travel S;
step D3: if the real-time travel S1 of the air cylinder (604) is smaller than 1/4 of the total travel S, the electric push rod (802) drives the lifting mechanism (8) to ascend, so that the real-time travel S1 of the air cylinder (604) is between 1/3 and 2/3 of the total travel S;
step D4: and after the adjustment is finished, polishing operation is continued until the maintenance of the contact line is finished.
2. The rapid grinding system of a rigid contact line according to claim 1, wherein the automatic grinding module (5) further comprises a bracket (502), a wheel set is rotatably arranged on the bracket (502), the wheel set is connected with a driving device, the abrasive belt (503) is wound on the outer part of the wheel set, the wheel set is used for driving the abrasive belt (503) to rotate, and the driving device is used for driving the wheel set.
3. The rigid contact line rapid sanding system as defined in claim 2, wherein the wheelset includes a drive wheel (505) and a plurality of driven wheels (501), the drive wheel (505) being fixedly connected to an output shaft of the drive device, the drive wheel (505) and the plurality of driven wheels (501) being each in rolling connection with the sanding belt (503).
4. The rapid grinding system for the rigid contact line according to claim 2, wherein a tensioning wheel assembly (504) is arranged on the support (502), one end of the tensioning wheel assembly (504) is in rolling connection with the abrasive belt (503), the other end of the tensioning wheel assembly is hinged with the support (502), an elastic assembly is hinged to the side portion of the tensioning wheel assembly (504), and one end, far away from the tensioning wheel assembly (504), of the elastic assembly is hinged with the support (502).
5. The rapid grinding system of claim 2, wherein the bracket (502) is rotatably connected with the output shaft of the driving device, an electric pushing cylinder (507) is hinged to the side part of the bracket (502), and a support (506) is hinged to one end of the electric pushing cylinder (507) away from the bracket (502).
6. The rapid grinding system for rigid contact wires according to claim 5, characterized in that a pressure sensor (7) is arranged between the support (506) and the contact force ensuring mechanism (6), the pressure sensor (7) being used for detecting the pressure between the abrasive belt (503) and the contact wire.
7. The rigid contact line rapid grinding system according to claim 1, wherein the lifting mechanism (8) comprises a scissor lift (801), the guide bar (602) is slidably arranged on top of the scissor lift (801), and a plurality of the guide bars (602) are used for guiding the movement of the upper panel (603) in the vertical direction; one end of the air cylinder (604) far away from the upper panel (603) is fixedly connected with the top of the scissor lift (801).
8. The rigid contact wire rapid grinding system of claim 7, wherein a first displacement sensor (606) is fixedly arranged on top of the scissor lift (801), and the first displacement sensor (606) is used for monitoring the height of the upper panel (603).
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| CN116922230B (en) * | 2023-09-15 | 2023-12-12 | 四川工程职业技术学院 | Flexible contact wire polishing device |
| CN117984188B (en) * | 2024-03-22 | 2024-07-05 | 芜湖洪金机床有限公司 | Numerical control side milling vertical compound grinding machine |
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